Wastewater treatment method and wastewater treatment system utilizing combination of anaerobic membrane bioreaction and shortcut nitrification and denitrification

A wastewater treatment system and anaerobic membrane biology technology are applied in the field of wastewater treatment methods and systems of anaerobic membrane biology-short-path nitrification and denitrification. The effect of floor space, convenient operation and management, and reduction of energy consumption and operating costs

Pending Publication Date: 2020-03-24
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems in this process, such as large energy consumption, high operating costs, and large floor space.

Method used

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  • Wastewater treatment method and wastewater treatment system utilizing combination of anaerobic membrane bioreaction and shortcut nitrification and denitrification

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Comparison scheme
Effect test

Embodiment 1

[0088] In this embodiment, the influent flow rate of the anaerobic membrane bioreactor is 106.6L / d, and the organic loading rate is 1.5 (kg / m 3 / d), the hydraulic retention time is 6.5H, and the sludge retention time is 100 days; the ammonia nitrogen inflow load of the short-range nitrification and denitrification reactor is 0.15 (kg / m 3 / d), the sludge residence time is 9.3d.

[0089] The concentration and removal rate of pollutants in the wastewater before and after the above steps are shown in Table 1.

[0090] Table 1. Operation results of wastewater treatment

[0091] parameter (mg / L) flooded out of water Average removal rate (%) COD 502±44 25±10 95 NH 4 + -N

50±5 3±1 94 NO 2 - -N

ND 12±2 - NO 3 - -N

ND 2±1 - TP 6±2 0.5±0.2 93

[0092] ND: not detected

[0093] It can be seen from the data in Table 1 that after the wastewater is treated, the removal rate of COD reaches 95%, and the removal ...

Embodiment 2

[0095] In this embodiment, the influent flow rate of the anaerobic membrane bioreactor is 30L / d, and the organic loading rate is 0.5 (kg / m 3 / d), the hydraulic retention time is 6.5H, and the sludge retention time is 100 days; the ammonia nitrogen inflow load of the short-range nitrification and denitrification reactor is 0.05 (kg / m 3 / d), the sludge residence time is 15d.

[0096] The concentration and removal rate of pollutants in the wastewater before and after the above steps are shown in Table 2.

[0097] Table 2. Operation results of wastewater treatment

[0098] parameter (mg / L) flooded out of water Average removal rate (%) COD 523±128 35±10 94 NH 4 + -N

[0099] It can be seen from the data in Table 2 that after the wastewater is treated, the removal rate of COD reaches 94%, and the removal rate of NH 4+ -N removal rate reached 95%, indicating that the anaerobic membrane bioreactor-SBR combined process has a good treatment effect on p...

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Abstract

The invention discloses a wastewater treatment method and a wastewater treatment system utilizing a combination of an anaerobic membrane bioreaction and shortcut nitrification and denitrification. Thewastewater treatment method comprises the following steps: carrying out an anaerobic reaction on to-be-treated wastewater to obtain first wastewater; and filtering the first wastewater, and carryingout a biological denitrification reaction to allow the first wastewater to reach the standard, thereby completing wastewater treatment. After the wastewater is subjected to anaerobic-shortcut denitrification treatment, effluent quality is stable and reaches the standard; wastewater treatment equipment is centralized, so an occupied area is reduced, and operation and management are convenient; a shortcut nitrification and denitrification reactor control system detects and controls the changes of water quality parameters in the shortcut nitrification-denitrification nitrogen removal process in real time, so automatic control over shortcut nitrification-denitrification nitrogen removal is easy to achieve.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a wastewater treatment method and system for anaerobic membrane biology-short-range nitrification and denitrification. Background technique [0002] The traditional biological denitrification process anaerobic-anoxic-aerobic process is widely used in urban wastewater treatment plants because of its good treatment effect. However, there are still many problems in this process, such as high energy consumption, high operating costs, and large floor space. Therefore, it is of great significance to develop new biological treatment processes that reduce energy consumption, save costs and reduce floor space. The anaerobic treatment process has the characteristics of low energy consumption, and can degrade macromolecular organic matter into small molecular organic matter, so that subsequent microorganisms can make full use of organic matter. Combining with membrane se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F9/00C02F1/001C02F3/2853C02F1/444C02F3/302C02F2101/16
Inventor 魏源送陈彦霖陈梅雪隋倩雯郁达伟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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